Noun-
An abnormally largepill(s) or referring to the strength of the pill being a heavy dose. Ideal one would thing such a pill was mean for a horse instead of a human.

Cute nurse: Here is you medicine for today.
Old man: I believe you have my medicine mixed up, these are horse pills.
Cute nurse: If you do not want to take your medicine. I will grind them up and put them in peanut butter and stick it to the roof your mouth, is that what you want?
Old man: No, fine I will take them.